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Matijevic Hill first survey, Sol 3057 - 3152 |
 Sep 16 2012, 07:51 PM
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#196
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 Senior Member  Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542  |
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Sep 16 2012, 09:37 PM
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#197
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 Junior Member Group: Members Posts: 40 Joined: 29-December 11 Member No.: 6295 |
-------------------- But to be a lament on the lips of the loved one is glorious, For the prosaic goes toneless to Orcus below. (Friedrich Schiller: Naenie)
Home of marspages.eu and plutoidenpages.eu |
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Sep 16 2012, 09:46 PM
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#198
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Junior Member Group: Members Posts: 40 Joined: 29-December 11 Member No.: 6295 |
In my opinion the MI of Whitewater Lake must be placed upside down due to the shadows in the upper left side (the sun comes from the right side):
Link to image Cheers, Udo -------------------- But to be a lament on the lips of the loved one is glorious, For the prosaic goes toneless to Orcus below. (Friedrich Schiller: Naenie)
Home of marspages.eu and plutoidenpages.eu |
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Sep 16 2012, 10:40 PM
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#199
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
After all these years of being faithful to "McKay" - spotted on the side of Homeplate by Spirit, about a million years ago - I think I have a new favourite Mars rock...
Full reverse, Chewie...!!! 
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Sep 16 2012, 11:49 PM
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#200
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 Senior Member Group: Members Posts: 1621 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
Sol 3066 Navcam pan. I love the fact of seeing the rover tracks coming from somewhere *of the crater bottom*.
 Stu! Hay lapa no ya, Stu! 
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Sep 17 2012, 12:06 AM
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#201
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Member Group: Members Posts: 154 Joined: 21-April 05 From: Rochester, New York, USA Member No.: 336 |
QUOTE (Stu @ Sep 16 2012, 06:40 PM)  After all these years of being faithful to "McKay" - spotted on the side of Homeplate by Spirit, about a million years ago - I think I have a new favourite Mars rock... Full reverse, Chewie...!!! Turtle with a top hat? |
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Sep 17 2012, 12:29 AM
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#202
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Junior Member Group: Members Posts: 54 Joined: 10-August 11 Member No.: 6119 |
Two pancam images from Sol 3074
A color flicker gif of Stu's rock...
And a view of presumably 'Whitewater Lake'...
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Sep 17 2012, 12:37 AM
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#203
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
QUOTE (Udo) MI of Whitewater Lake must be placed upside down [strikethrough]All[/strikethrough] Many MI images are "inverted" compared to Pancam and Navcam images.--Bill -------------------- |
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Sep 17 2012, 12:55 AM
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#204
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 Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
QUOTE (Ant103 @ Sep 17 2012, 01:49 AM) I love the fact of seeing the rover tracks coming from somewhere *of the crater bottom*. Curiosity like! 
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Sep 17 2012, 01:08 AM
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#205
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 Senior Member Group: Members Posts: 4260 Joined: 17-January 05 Member No.: 152 |
We are starting a "new mission", after all...
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Sep 17 2012, 01:09 AM
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#206
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Senior Member Group: Members Posts: 1075 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
An anaglyph of "Stu's rock":
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Sep 17 2012, 01:56 AM
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#207
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 Member Group: Admin Posts: 978 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
QUOTE (Bill Harris @ Sep 16 2012, 04:37 PM) All MI images are "inverted" compared to Pancam and Navcam images. --Bill The image reversal depends by the IDD configuration. If the wrist is down the MIs are right side up but if the wrist is up MIs are upside down. I'm not sure if the joint values are reported in the telemetry that is publicly available. Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Sep 17 2012, 03:25 AM
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#208
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
Ah, let me rephrase that and say "many" instead of "all". After I figure the context I typically flip the image to be non-inverted.
Nice area for this stop. --Bill -------------------- |
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Sep 17 2012, 05:58 AM
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#209
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Junior Member Group: Members Posts: 94 Joined: 11-August 12 Member No.: 6536 |
I really like the idea of an impact orgin for the spherules. Four billion years ago, impact rates would have been very high. Maybe every few million years, a large impactor would have formed a 100 mile class crater and thrown out a shower of spherules. In between impacts, water erosion laid down sediment forming mudrocks.
In the Barberton greenstone belt of South Africa there are several beds of spherules which most believe to have been formed by large impacts 3.2 billion years ago. The beds vary in thickness from a few centimeters to 2 metres. The spherules are described as accretionary lapilli of up to 3mm in diameter, although a few are as much as 10mm in size. They are described as having a concentric appearance with sometimes distinct nucleii, and consist mostly of microquartz chert and sericite. The spherule beds are found in layers of chert. Banded iron formations and shales are also found in the region. Apart from impact, at least two other theories have been advanced for the formation of the Barberton spherules. One is that they are silcified marine carbonate ooids. The other is that they are formed by volcanic processes followed by hydrothermal alteration. The spherules are believed to be impact produced because of high concentrations of iridium (up to 2700 ppb) and other platinum group elements. They also have a high nickel and chromium content, and chromium isotope ratios have also been interpreted as evidence for impact origin. I wonder if APXS could detect the iridium? Image of Barberton spherule beds |
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Sep 17 2012, 05:24 PM
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#210
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Junior Member Group: Members Posts: 31 Joined: 10-August 12 Member No.: 6526 |
QUOTE (ngunn @ Sep 15 2012, 07:31 AM) A particularly nice shot of the uphill detour: http://qt.exploratorium.edu/mars/opportuni...M5P1977R0M1.JPG Nice, here's a cross-eyed pair:
Mark |
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